Smokey leak pasties

This recipe is from Vegan cooking the compassionate way of eating by Leah Leneman and was an absolute favourite of my children when they were young and would be still if there was a substitute for the smokey snaps that were discontinued 10 or 15 years ago because they were made from GM soya, I always thought why didn't they just make the same product but with non GM soya ???
Anyway I digress, I have tried several products to replicate the smokey flavour of smokey snaps but to no avail. If anyone comes up with a viable substitute please let me know via comments I would be extremely grateful, thanks.
So here is the recipe as it appears in the book,

1/2 lb of wholewheat pastry (8 oz flour, 4 oz vegan margarine, see my pastry recipe)
1/2 oz marg
1/2 oz w/w flour
1/4 pint soya milk
1/2 teaspoon sage
3 medium sized leaks
1-2 tablespoons smokey snaps
sea salt to taste

Heat margarine in small saucepan and add flour. Add soya milk carefully, stirring constantly to avoid lumps.
Chop leaks and blanche in boiling water for 3 minutes then drain well.
Roll out the pastry and cut into four rounds with a saucer.
Mix leaks, smokey snaps and sage with the white sauce, season to taste.
Spoon the mixture onto the centre of the pastry circles. Bring the edges up to meet on top and pinch together all round.
Bake in a hot oven at 425f/ 220c(gas mark 7) for 10 minutes, then lower the heat to moderate 350f /180c (gas mark 4) and cook for a further 20 - 30 minutes until the pastry is well cooked.

This recipe is slightly over complicated as I cook them at 180 or 200 in a fan oven until they look cooked and golden brown, about 15 or 20 minutes. I don't know why she cooks them at different heats and for so long, also if you make a bit more pastry like 12 ounces of flour you should get 10 to 15 pasties out of it as they are great the next day for lunch or dinner, reheated or cold

Please let me know if you find a suitable substitute for smokey snaps that works, thanks.

 I have just tried a product reccomended by one of my sons and it worked really well. The product is Quorn vegan smokey ham slices cut into small pieces and fried in a little oil until brown and crispy, it takes a while, keep an eye on it. When cooked place on a baking tray and sprinkle with smoked paprika and salt and mix then add to leeks and sauce and proceed as above.